61634334220 has 48 divisors (see below), whose sum is σ = 131035776480. Its totient is φ = 24348473856.

The previous prime is 61634334197. The next prime is 61634334221. The reversal of 61634334220 is 2243343616.

It is not an unprimeable number, because it can be changed into a prime (61634334221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7945864 + ... + 7953616.

It is an arithmetic number, because the mean of its divisors is an integer number (2729912010).

Almost surely, 2^61634334220 is an apocalyptic number.

It is an amenable number.

61634334220 is an abundant number, since it is smaller than the sum of its proper divisors (69401442260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61634334220 is a wasteful number, since it uses less digits than its factorization.

61634334220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12634 (or 12632 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 34.

Adding to 61634334220 its reverse (2243343616), we get a palindrome (63877677836).

The spelling of 61634334220 in words is "sixty-one billion, six hundred thirty-four million, three hundred thirty-four thousand, two hundred twenty".